<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
  <script>
      var a = 11;
      var b = 2;
      console.log("a % b = "+a % b);
      console.log("a / b = "+a / b);
      var c = a ++;  //先用后加
      var d = ++ b; //先加后用
      console.log("c = "+c);
      console.log("d = "+d);
  </script>
</body>
</html>